Datasheet

LPC11E6X All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 1.2 — 21 May 2014 23 of 89
NXP Semiconductors
LPC11E6x
32-bit ARM Cortex-M0+ microcontroller
• Digital filter with programmable filter constant on all pins. The minimum filter constant
is 1/50 MHz = 20 ns.
8.9.2 Standard I/O pad configuration
Figure 9 shows the possible pin modes for standard I/O pins with analog input function:
• Digital output driver with configurable open-drain output
• Digital input: Weak pull-up resistor (PMOS device) enabled/disabled
• Digital input: Weak pull-down resistor (NMOS device) enabled/disabled
• Digital input: Repeater mode enabled/disabled
• Digital input: Input digital filter selectable on all pins. In addition, a 10 ns digital glitch
filter is selectable on pins with analog function.
• Analog input
8.10 Fast General-Purpose parallel I/O (GPIO)
Device pins that are not connected to a specific peripheral function are controlled by the
GPIO registers. Pins may be dynamically configured as inputs or outputs. Multiple outputs
can be set or cleared in one write operation.
Fig 9. Standard I/O pin configuration
PIN
V
DD
V
DD
ESD
V
SS
ESD
strong
pull-up
strong
pull-down
V
DD
weak
pull-up
weak
pull-down
open-drain enable
output enable
repeater mode
enable
pull-up enable
pull-down enable
select data
inverter
data output
data input
select glitch
filter
analog input
select analog input
pin configured
as digital output
driver
pin configured
as digital input
pin configured
as analog input
PROGRAMMABLE
DIGITAL FILTER
10 ns GLITCH
FILTER
aaa-010776